Aaeon GES-2200F, Owner'S Manual

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G r e e n E m b e d d e d S y s t e m G E S - 2 2 0 0 F
Appendix A Programming the Watchdog Timer
A-6
A.2 W83627UHG Watchdog Timer Initial Program
Example: Setting 10 sec. as Watchdog timeout interval
#include <stdio.h>
#include <conio.h>
#define EFER_Port 0x2E
#define Entry_Key 0x87
void main (void)
{
// Set Entry Key
outportb(EFER_Port,Entry_Key);
outportb(EFER_Port,Entry_Key);
// Enable WatchDog function
outportb(EFER_Port,0x07);
outportb(EF1,0x08);
outportb(EFER_Port,0x30);
outportb(EF1,0x01);